morin



. H. V. MORIN.

TOOL HOLDER.

APPLICATION FILEII DEC. 2, |920.

1,395,859. PatenwaNov; 1,1921'.

Nam?" s IN s f' @I Him EN? ENCE.'

i Toon-HOLDER.

Specification of Letters Patent.

Patented Nov. 1, 112121.

Application filed yDecember 2, 1920. Serial No. 427,795.

To all iii/wm t may concern Be it known that I,.HENRYV. MORIN, a citizen of the United States, residing at Poughkeepsie, in the county of Dutchess and State of New York, have invented certain new and'useful improvements in a Tool- Holder, of which the following is a specification. i

This invention relates to improvements in holders for lboring tools for enlarging cavities previously bored, and has for one of its objects to simplify Land improve the construction and increase the efficiency and utility of devices of this character.

Another object of the invention is to provide a device/of this character in which the tool may be adjusted for different sizes of cavities without the necessity of employing a wrench or other extra tool or implement.

With these and other objects in view, the invention consists in certain novel features of construction as hereinafter shown and described and specifically pointed outin the claims, and in the drawings illustrativen of the preferred embodiment of the invention.

Figure 1. is a side elevation of the improved device.V

Fig. 2 is a front elevation.

Fig. 3 is a side view with the bodyor head in section on the line 3-3 of Fig. 2.'

Fig. 4 is a front elevation with the cap removed and the holding head and holder l block.

partly in section'.

Fig. 5 is adetached perspective view of the tool holder. j l

Fig. 6 is a section of the holder and thrust r1`he improved device includes a body or head 10 preferably cylindrical externally and with the outersurface knurled or otherwise roughened to enable it to be gripped by the hand of the operator.

Akt its outer endfthe head 10 is formed with an internally threaded recess 11 concentric toits exterior, and formed in the head is a relatively large recess 12 eccentric to the exterior of the head and communicating with the concentric recess.

The remaining portion of the head is counterbored with annular steps 18 concentric to the exterior of the head and eccentric to the recess 12.l

Fitting in the recess 11 is an externally threaded disk 14, the latter having sockets 15 to receive the turning pins of a pin wrench to enable the disk to be inserted and removed.

The disk 14 is also-provided with a central aperture 16 from which an enlargement 17 extends at one side.

rThe concentric portion 16 of the aperture is undercut as shown at 18 forming an internally directed bearing, as shown.

Mounted for rotation in the concentric stepped bore of the head 10, is a stock or shank comprising a socket engaging portion 19 and a plurality of annular enlargements 20 conforming to and engaging the shoulders 13, of the head.

The member 19-20 extends at 21 into the eccentric recess 12, the portion thus extended being provided with a transverse guideway having inwardly facing guide channels 22 in its side walls. At their outer ends the sides of the portions 21 are Afurther extended and provided with segments 24 to 'terminal of the tool, indicated at 27.

At' its inner end the socket 26 is reduced and extended through the body of the holder to receive a threaded locking stud 28 having van enlarged inner end or'head 29 against which the inner end of the tool stock 27 impinges when the latter is screwed home in the holder.

The member 28-29 serves as a means for holding the tool 27 in adjusted position longitudinally, and likewise as a locking means to prevent the displacement of the tool. Y

At one end the member 23 is curved, as shown at 30, to conform substantially to and rotative in the eccentric Vrecess 12.

Formed in the other end of the holder 23 is an outwardly opening slot and slidably engaging in the slot is a thrust block 31.

Formed in the inner face of the block 31 are sockets to receive springs 32, the springs bearing against the inner end of the slot in the member 23 and operating to maintain the block yieida-biy locked in adjusted posi-g tion against the adjacent Wall of the recess.

The block 31 is provided with an el0n gated aperture 33 to receive apin 34' extending through the walls ofthe member 23, toV

prevent the block from beingdetached When the holder is removed, while at the same time permitting the requisite movement under the influence of the springs 32.A y

Engaging upon the outer enlar ement of the stock 1 9 and attached'for rotationthere- With by a key 35 or other suitable means, is

an annularmember 36 having marginal graduations 37 coacting with corresponding,v

that by rotating the head 10-.in one direcv tion upon its seats,20the holder 23 'Will bei forced to move in the slot-inf the portion 21; by reason ofthe engagement of its terminals. 30 and-31 withthe eccentric borey 12, theextent of this movement being controlled byv the size of the bore 12. The bore 12 is so arranged thatV when the holder 23 'is at one end of its'stroke, the tool 27 Will'bein alinement W-ith the 'stock 19,-and:the device may then be employed to-iholdl a simple drill. Then when'the osition of the holder isreversed, the cutting edge v3 9 will be at its greatest distance from theaxial lineof the stock 19 Vand will cut its largestsized cavity.

The implementqmay beadjustedtocut anyrequired size ofvcavity by setting'thememf -be'r 10 ata corresponding-point by actuating the member 36 as will be obvious.

sizes to be cut to be accurately-gaged The improveddmplementfis simple inconhaving' f a@ 'slotted-'f extensiom proj acting;- into struction, can be inexpensively manufactured and ofany required size .and capacity, and any requiredgs'ze orrange of tool ymay be employed.' f

The preferred. embodiment of the invention is' ldisclosed in the drawings and setV forth in the specification, but itgwillbe `un-Q- derstood that any modiiications within'the scope ofthe claimed invention may' be made in the construction Without departingy from the principle ofthe invention or sacrificing any of its advantages. Y

I claim: v

1. A device of the class described com-y prising a headhaving a concentric boreand with aA recesseecentric to the borefand 'communicating therewith, a shank rotatively engaging. the bore and extending into the recess, and' a tool holder supported movably by the. shank within the recess and movably engaged by the wallsof the same.

, gaging'the bore'and dingintothe recess, saidgextended portion having a.t transverse` g'unileivvayc, 1w tool "holder:- suppdrtedmovably within. the fgmdoway and; movably engaged ati one endbyrthefwaliofi'the recess,

and-af thi'ustbloekiSpting tl the other-` endfofz tbecholdenandf bearing yieldably. against thewaltofthefreeesn;

4l Ai device oifthe olas demribed; o oxnprising ahead havingiexternalsgraduations and azooneentx'ic bores-and .witlnaireee'ssfeccentric to the here` ande communicating therewith, a Shank; rotntvely; engaging `thebore and extending' Yil'x'to the ,recm, a tool holder supported;Y movablyifhy, the shank Withinl the andrmov'aby; engaged by. the'walls of the same,and'a.member1 rotative with the shank andV having. gi'mllxatiiixxsA ooacting with thegraduetionsion diehard.

' 5. A devideaoffthe dass; deseribdeomprsingahead@ having external gradations The vernierdevice 37 and 3 8 enables-thet v cess: oonnnumeatingfmithrtheibore, a shank.

and af concentrici-bom andren remember rotatively 'engagingvilxthe borefand the eccentric recess, al holder memberengagthe ,Shanky and graduated@ correspond tor the graduetions on thqhegd, 1

In testimonyfwhereef- I- ax mysignature hereto.

f HENRY MORIN.i 

